On Friday, the actress announced on Twitter that she and husband Bodhi Elfman welcomed a second son, Easton Quinn Monroe Elfman, at 7:53 a.m. Tuesday in Los Angeles. "He's an impressive sleeper (thank god!) & I'm his biggest fan," says the star's tweet.

Easton joins big brother Story Elias, 2 ½. Elfman, 38, tells People that the pregnancy was planned around her show's shooting schedule.

"It was like an afterthought perk. I thought, 'Well, if the show gets picked up that could be cool. I can have my next kid and I won't have to hide it.' You know, I'm not in my early twenties so I got to get busy," she said.

The Elfmans, who recently celebrated their 15th wedding anniversary, announced the pregnancy in September.